Abstract: A method and apparatus for processing compressible insulation material of mineral fibers in which a folding shoe guides the insulation material from a strip condition into a cylindrical condition and further including initially compressing the portion of the strip material along the centerline thereof, subsequently compressing the portions of the strip material intermediate the center line and the side edges of the strip material, and, finally, compressing the side edge portions of the strip material.

Abstract: An apparatus for producing multi-walled thermoplastic tubing having a corrugated wall and a substantially smooth inner wall secured to the corrugated wall, there is incorporated two sets of endless flexible belts each of which is entrained around rotatable end rolls, the outer runs of the belts of one of the sets thereof alternating with the outer runs of the other of the sets thereof, with these outer runs of the various belts serving to urge the inner wall against the corrugations of the corrugated wall while the thermoplastic material of the walls is soft thereby to secure the walls together, and with an electrically energizeable heating coil being provided for softening the thermoplastic material of the corrugated wall to ensure satisfactory securement between the walls.

Abstract: This invention contemplates an apparatus for affixing to a papermaking felt a plurality of beads comprising means for supporting a papermaking felt having a working surface and means for applying beads of plastic backing, said beads extending away from said working surface and having top portions which are spaced from each other along said working surface to form channels for liquid flow.

Abstract: A device to weld or splice two ends of a thermoplastic yarn. The device includes means for holding the yarn adjacent a heating element. The heating element is energized and the two ends of the yarn are fused together to form a globule of molten plastic. Thereafter, the heat is terminated and the device automatically pulls the two lengths of yarn apart and holds them under tension, and at the same time, the device molds the globule into a relatively smooth mass that has a width substantially equal to the width or diameter of the yarn.

Abstract: There is disclosed a lattice structure having a plurality of elongated parallel elements interconnected periodically by integrally formed ribs therebetween and a plurality of elongated filaments, each of which is embedded in and adhered to one of the elongated parallel elements. The structure is constructed by a method which includes the steps of molding the lattice structure from film or laminate belts, heating the filaments above the melting temperature of the molded lattice structure, joining the heated elements with the structure and solidifying the lattice structure adjacent each filament.

Abstract: The present invention relates to apparatus for edging reinforced elastomeric fabric and a preferred method for the operation thereof. One embodiment of apparatus includes a frame, a table for support of the elastomeric fabric, at least one extruder assembly adjacent the table for the application of a suitable elastomeric material directly onto an edge of the elastomeric fabric and means for moving the elastomeric fabric over the table. In an alternate embodiment, the apparatus includes a frame, means for support of the elastomeric fabric and at least one extruder assembly adjacent the means for support for the application of a suitable elastomeric material directly onto an edge of the elastomeric fabric.

Abstract: A process is provided for manufacturing a product which has a fibrous surface and is formed by the conversion of a non-fibrous polymer, which process comprises placing a polymer between drawing surfaces which adjoin the polymer and adhere thereto and separating the surfaces. At least one of the surfaces is formed by a carrier for the polymer and for the fibers, through which carrier a fluid is blown such as to flow around the fibers in statu nascendi and orient and stabilize them as their viscosity increases. An apparatus for carrying out said process is also provided.

Abstract: Apparatus for molding of filament-reinforced plastic rods, such apparatus having an improved shaping device for expressing air from a longitudinally advancing, elongated mass, comprised of a bundle of filaments embedded within an unset plastic material, and for imparting a desired round cross-section to such mass during the continuous travel thereof.

Abstract: Apparatus for uniting at least two concentrically extruded tubular films of thermoplastic synthetic resin includes a mandrel located in the innermost of the films and having a leading conical portion and a trailing cylindrical portion to expand the innermost film in transverse direction substantially to the diameter of the outermost film. The mandrel is heated by electromagnetic waves produced by a high-frequency transmitter connected to a high-frequency coil surrounding the tubular films in the region of the mandrel. A temperature sensor connected to the mandrel senses the temperature of the latter and the sensed temperature is transmitted by an ultra shortwave transmitter connected to the sensor and ultra shortwave receiver connected to the high-frequency transmitter to control the latter and to maintain the temperature of the mandrel at a desired constant temperature.

Abstract: An arrangement is described for assuring a parallel, evenly-spaced relationship among a succession of rod-shaped fasteners, illustratively nails, to be joined by an extruded plastic ribbon and thereafter molded into a nail strip suitable for use in pneumatic nail drivers and the like. A succession of grooves formed in a transfer chain that receives and advances a succession of the nails in a first plane is conventionally contacted by an elongated support means which bears against a first plurality of the grooves on the chain to capture the nails in the grooves. A second pressure member of smaller longitudinal extent than the support member is resiliently mounted in inwardly overlapping relation to the support member adjacent and upstream of the molding portion of the apparatus for contacting the shafts of the captured nails immediately before such nails and the adhered plastic ribbon are molded into the strip.

Abstract: The angular position of a wrap control roll about a paper web preheating roll is remotely adjusted to any one of a plurality of predetermined set positions by an index control over the adjustment power train. The index conrol comprises a remote positioned, console mounted rotary switch having contact positions corresponding to the predetermined wrap control roll set positions. Cooperative switches mounted in an adjustment drive follower mechanism continue the circuit continuity to a solenoid activated drive motor reversing switch. A breaker unit within the follower mechanism is directly driven by the adjustment power train to open the motor switch when the breaker unit is correctly aligned with the desired set position.

Abstract: An apparatus is provided for the continuous molding of hardened resin construction members reinforced with fiber material precisely positioned and arranged during the continuous molding process. The reinforcing fiber material in the form of continuous rovings, woven webs, fabric, fleeces, etc. and having a sizing is fed into an elongated hollow molding duct where the material is first compressed and heated to bond the fibers together at their points of contact to form a grid structure. Synthetic resin is injected into the duct intermediate its ends to impregnate the grid structure and be shaped by the molding duct with the reinforcing fibers contained within the resin. The synthetic resin is then hardened by heating as the shaped resin passes further along the duct forming the finished construction or profile member.

Abstract: A method and apparatus for insulating a plurality of electrically conductive elements and to produce electrical cable where the method includes heating the unformed insulative material and conductive elements, applying pressure and simultaneously removing heat with a pair of rollers at a relatively low temperature and applying pressure and heat to preselected regions only of the insulative material. The method and apparatus further allow preselected portions of the cable to be unbonded so as to facilitate access to the conductive elements by simply interrupting the application of pressure to the preselected portions. The heat, press and cool and press and bond method may also be accomplished in a step and repeat process using presses to insulative flexible circuits. The above method and apparatus provide more reliable bonding at an accelerated rate of production.

Abstract: A method of, and apparatus for manufacturing a flexible plastics hose the method comprising extruding a strip of a first plastics material and a reinforcing element of a second plastics material, winding said strip into a helix around a driven mandrel and bonding adjacent turns together by pressure applied between the mandrel and roller means external thereof to form a tubular wall of said plastics material and simultaneously winding said reinforcing element around the helix of said first plastics material in spaced apart helical turns and pressing it into the first plastics material by said roller means so as to partially embed said reinforcing element into said tubular wall.

Abstract: In accordance with the teachings of the instant invention, there is disclosed an injection molding head for forming honeycombed structures of thermoplastic materials, which comprises a fixed mouthpiece having a plurality of strand channels extending longitudinally therethrough; a plurality of guide channels extending longitudinally therethrough and interposed between said strand channels; a strand deviation guide mechanism comprising a plurality of elongated members each slidably mounted in one of said guide channels; a frame arrangement attached to one end of each of a group of the elongated members for moving in a longitudinal direction one end of each of the elongated members beyond the exit end of the fixed mouthpiece for the provision of high thrust, lateral forces proximate to the output of said strand channels, and withdrawing the ends of the said elongated members from said extended position to within said fixed mouthpiece; and a drive apparatus coupled to the frame arrangement for moving the frame ar

Abstract: A bulb for a cathode tube comprising a cone having a narrow end adapted to receive electronic devices therein and a wide substantially rectangular base end having a screen with a curved viewing portion secured thereto. The curved viewing screen is provided with a substantially rectangular peripheral contour complementary to the contour of the base end of the cone and the viewing portion is so curved that the sections therethrough parallel to the cone base end define curves which are substantially parallel to the cone base and contour.